L.B. White Tradesman 400 Ultra DF Portable Temp. Gas Heater, 400K BTU, LPG-W/Diagnostics
​L.B. White Company, Inc. introduces what it says its the most compact 400,000 BTU/h dual fuel (LP/NG) heater on the market today, the Tradesman 400 Ultra DF portable forced air heater.
The Tradesman 400 Ultra DF weighs in at 55 pounds and is only 35 inches long, making this unit easy to carry from site to site. Heater output can be adjusted from 400,000 BTU/h down to 250,000 BTU/h for LP and down to 170,000 BTU/h for NG.
Variable output means fuel savings on the job, and this heater is direct fired, with 99%+ combustion efficiency and is Made in the U.S.A.
Engineered to deliver reliable, high efficiency heat, the L.B. White Tradesman 400 Ultra DF heater features a single lever to change from propane to natural gas, a thermostat to keep any work environment comfortable and a unique 3-trial ignition system that insures the heater will light under adverse conditions.
As durable as it is economical, the new Tradesman 400 Ultra DF has the heaviest gauge combustion chamber and burner plate in its class, a Tri-Shield finish to protect against abrasion or corrosion, is certified to meet or exceed CSA-US standards and is backed by an industry leading (2) year warranty.

​The Leading Portable Gas Heater for Construction Jobs and Industrial Work Sites Engineered to deliver reliable, directional heat, L.B. White Tradesman portable heaters feature a unique 3-trial ignition system, the industry's heaviest gauge combustion chamber and burner plate, and Self Diagnostic Service Saver models for convenient trouble-shooting. L.B. White has perfected every aspect of our portable construction heaters design to withstand harsh working environments. This has led to our reputation for reliability, durability and serviceability in the field. When the comfort and safety of your work crew is at stake… you want the leader in portable heating equipment for any commercial, industrial or construction job… L.B White. Key features of L.B. White Portable Forced Air Heater:

Available in models ranging from 100,000 to 400,000 Btu/h

Propane gas and natural gas (NG) models available

Ultra models include Self Diagnostic Service Saver for convenient trouble-shooting